Plow attachment.



No. 645,989. Patented Mar. 27, I900. 6. WILSON.

PLOW ATTACHMENT.

(Application filed Dec. 27. 1899.).

(No Model.)

NI'TED TATgES PLOW ATT.ACHM ENT.

SPECIFICATION forming part of Letters Patent No. 645,989, dated March27, 1900.

Application filed December 27. 1899. Serial No. 741,756. (No model.)

To all whom it may concern:

Be it known that I, CAESAR WILSON, a citizen of the United States,residing at Litchfield, in the county of Meeker and State of Minnesota,have invented anew and useful Plow Attachment, of which the following isa specification.

My invention is an improved revolving colter attachment forturning-plows, the object of my invention being to provide a revolvingcolter adapted for cutting through stalks, weeds, stubble, and othertrash in advance of the plow, thereby clearing away obstructions,increasing the efficiency of the plow,

reducing the draft thereof, and the labor of,

the plowman.

A further object of my invention-is to provide an efficient actuatingmechanism of simple construction for revolving the colter.

A further object of my invention is to provide an improved revolvingcolter and actuating mechanism therefor adapted to be attached to anyordinary turning-plow and to operate in conjunction therewith.

To these ends my invention consists in the combination, with arelatively-fixed blade or cutter-arm, of a revoluble serrated colterhaving a support adapted'to be attached to and readily removed from aplow.

My invention further consists in the combination, Wllill'tlongitudinally-movable cutter-arm, of a tension-spring to extend saidarm anda support for said arm and spring.

My invention further consists in the coinbination, with a case or framehaving radial arms adapted to be secured to a plow-beam, of a revolublecolter mounted in said frame or case, a trail-frame hinged on the axleof the colter, a traction-wheel mounted in said trailframe, andconnections between said tractionwheel and said colter to revolve thelatter when the plow moves.

My invention further consists in the peculiar construction andcombination of devices hereinafter fully set forth and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a landside elevation of anordinary turningplow provided with my improved colter attachment. Fig. 2is a horizontal sectional view of the same. Fig. 3 is arear endelevation of my improved attachment, showing the same in operativeposition on. a plow.

. Fig. 4 is a detail view of the longitudinally movable cutter-arm.

In the embodiment of my invention herein shown, 1 represents aframe-plate of suitable form having integral radial arms 2 arranged at asuitable angle and which are adapted to be secured to the beam a. of acommon turning-plow by the usual clip or U-shaped bolts Z), said armsand said bolts admitting of the ready attachment of the frame-plate tothe plow and of its adjustment thereon. -On the lower side of theframe-plate is a downwardly inclined forwardly extending socket-arm 3,in which is secured the upper end of a cutter arm or bar 4, connectedthereto and adapted to play therein by an adjusting-slot 5 and adjust-ing-bolts 6. A tensionspring 7 bears against the upper portion ofsaid cutter-arm and keeps the latter normally supported at the outerlimitof its movement with relation to the plate-frame. A cover-plate Sisbolted on the outer side of the frame-plate 1, and in central openingsin said frame-plate and cover-plate is journaled a shaft or axle 9, onwhich isarevoluble circular colter 10, provided with a serrated or othersuitable cutting edge. A knife or cutter 11 is secured and depends fromthe frameplate in line with the landside surface of the plow and at aslight distance in advance of the cutting edge thereof. The outer sideof the revolving colter 1O bears against the proximate surface of theframe-plate, and on the inner side of said revolving colter is a doublegear 12, which may be either attached thereto or formed integrallytherewith.

On the axle or colter-shaft 9 is hinged or pivoted the front end of atrail-frame 13, which is made of a single piece of bar metal bent toform the longitudinal arm 14:, having the lateral offset 15 near'itsfront end and the downturned arm 16 at its rear end, which said arm 16is bent to form a horizontal lateral offset 17 and the upturned verticalarm or standard 18, which is abreast of and parallel With the arm 16.

A driving-shaft 19 is mounted in bearings formed in the arms 16 18, nearthe lower ends thereof, and on said shaft is a traction-wheel 20, whichis adapted to run in rear of the plowshare. in the furrow and on theinner side of the landside and to rotate by frictional contact with thebottom of the furrow. A

spur or other suitable gear-wheel 21 rotates with the traction-wheel andengages a pinion 22 on a shaft 23, which is mounted in bearings near theupper ends-of the arms 16 18 and is provided on its landside end with abeveled gear 24, which engages a similar gear 25 ona connecting-shaft26, which is mounted in a bearing 27 on one side of the arm 14 of thetrail-frame and in a bearing 28 in the offset 15. To the front end ofthe shaft 26 is fixed a beveled gear 29, which engages the gear 12 onthe revolving colter.

It will be understood from the foregoing that when the plow travels inits furrow rotary motion from the traction-wheel will be communicatedthrough the connecting actuating-gear mechanism to the revolving colterand the latter will cut and saw through the weeds, grass, stalks,stubble, and other trash in front of the plow, said obstructions beingfed to said revolving colter by the arm 4 and held by said arm againstthe cutting edge of the colter while the latter cuts through the same.

It will be further understood from the fore-- cheaply manufactured.Moreover, the rear,

end of the trail-frame is adapted to play vertically when the plow is inmotion by reason of the hinged connection of the trail-frame to the axleof the revolving colter, thus avoiding torsional and other stress on thetrailframe and enabling the traction-wheel to ride over rocks, roots,andother obstructions which may be encountered in the furrow withoutdisconnecting the revoluble colter or pretermitting the rotation of saidcolter.

The tension-springs 7, while keeping the arm 4 normally extended undertension sufiicient to cause the arm to gatherand direct the trash to thecutting edge of the revolving colter, adapts said arm 4 to yield andmove upward in its socket or guide-holder when it encounters anobstruction of unusual size and not adapted to be cut by the revolvingcolter and to clear said obstruction and permit the same to be actedupon and cut or broken by the rigid cutter 1.1 in rear of said arm orcutter 4.

In order to provide against lateral motion of the trail-frame, I employa vertical guiding and retaining yoke 30, which is formed from a singlebar of metal and is bolted to the plow-standard c, on thelandsidethereof, as at 31, the arm 14 of the trail-frame being disposed betweenthe proximate sides of the said yoke and the plow-standard. A spring 32is firmly bolted at its inner end to the upper end of the yoke 30, andthe lower rear end of said spring is connected to the arm 14 of thetrail-frame, as at 33, said spring bearing downwardly on saidtrail-frame and exerting downward pressure on the traction-wheelsufficient to insure the rotation of the latter in contact with thebottom of the furrow.

A suitable case 34, which is indicated in dotted lines, Figs. 1 and 3,incloses the connecting actuating mechanism between the traction-wheeland the revoluble colter to excl ude grit therefrom and shield the samefrom injury.

Having thus described my invention, I claim- 1. In a plow attachment,the combination, with the colter case or frame, having the radial armsadapted to be secured to a plowbeam, of the revoluble colter, in saidcase or frame, the trail-frame hinged on the axle of the colter, thetraction-wheel mounted in said trail-frame, and connections between saidtraction-wheel and said colter, to revolve th latter, substantially asdescribed.

2. In a plow-colter,the longitudinally-movable cutter-arm, incombination with a tension-spring, to extend said arm, and a support forsaid arm and spring, substantially as described.

3. In a plow attachment, the combination with a relatively-fixedguiding-arm, orcutterbar, of a revoluble colter and means to rotate saidcolter, substantially as described.

4. In a plow attachment, the supporting case or frame, adapted to beseen red to a plow, and having a downwardly-inclined arm, in

combination with a revoluble colter mounted I in said case or frame, anda traction device,

and connections to rotate said colter, substantially as described.

5. The combination, with the case orframe, adapted to be secured to aplow, and having the revolving colter, of the trail-frame connected tosaid colter case or frame, and having the traction device, andconnections to rotate the colter, substantially as described.

6. In a plow attachment, the combination, with the colter case or frame,of the revolving colter supported therein, the trail-frame, the tractionand connecting actuating devices to rotate the colter, and the spring,or equivalent device, bearing downward on said trailframe for thepurpose set forth, substantially as described.

7. In a plow attachment, the trail-frame, formed of a single bar ofmaterial, and comprising the longitudinal arm 14, having the offset 28,and the downturned arm 16 bent to form the lateral offset 17 andvertical arm 18, for the purpose set forth, substantially as described.

8. In a plow attachment, in combination with a supporting frame or case,having the yielding cutter bar or arm 4, and the rigid cutter 11, inrear thereof, the revoluble colter in said support or frame, and meansto rotate said colter, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

CAESAR WILSON. Witnesses:

E. HAMME, LARS WILsoN.

